Merge branch 'feature/addSubproviders' into feature/portal-ledger-support

* feature/addSubproviders:
  remove console.log
  Update README.md
  Fix unit test
  Add missing params
  Debug CircleCi failure
  Update yarn.lock
  Inline network module
  Add todo
  Stop supporting different file extensions in abi-gen
  Refactor networkId out of web3Wrapper
  Update connect types in preperation for publishing
  Add link to random id generator
  Remove `prebuild` command and add `test:circleci`
  Fix CI command
  Address feedback
  Refactor web3Wrapper to a separate package

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/postpublish_utils.js b/scripts/postpublish_utils.js
index e2c23ee14..e9563a51c 100644
--- a/scripts/postpublish_utils.js
+++ b/scripts/postpublish_utils.js
@@ -1,6 +1,6 @@
 const execAsync = require('async-child-process').execAsync;
 const semverSort = require('semver-sort');
-const promisify = require('es6-promisify');
+import {promisify} from '@0xproject/utils';
 const publishRelease = require('publish-release');
 
 const publishReleaseAsync = promisify(publishRelease);